120131331320 has 288 divisors, whose sum is σ = 367690246560. Its totient is φ = 34561612800.

The previous prime is 120131331319. The next prime is 120131331323. The reversal of 120131331320 is 23133131021.

It is a super-2 number, since 2×120131331320² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 120131331292 and 120131331301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120131331323) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5715230 + ... + 5736210.

It is an arithmetic number, because the mean of its divisors is an integer number (1276702245).

Almost surely, 2^120131331320 is an apocalyptic number.

120131331320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120131331320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183845123280).

120131331320 is an abundant number, since it is smaller than the sum of its proper divisors (247558915240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120131331320 is a wasteful number, since it uses less digits than its factorization.

120131331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21047 (or 21019 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 120131331320 its reverse (23133131021), we get a palindrome (143264462341).

The spelling of 120131331320 in words is "one hundred twenty billion, one hundred thirty-one million, three hundred thirty-one thousand, three hundred twenty".